package com.ai.bitcoin.controller;

import me.chanjar.weixin.mp.api.WxMpMessageRouter;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.message.WxMpXmlMessage;
import me.chanjar.weixin.mp.bean.message.WxMpXmlOutMessage;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * @author Binary Wang(https://github.com/binarywang)
 */
@RestController
@RequestMapping("/wechat/portal/{appid}")
public class WechatMpController {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());
    @Autowired
    WxMpService wechatService;
    @Autowired
    WxMpMessageRouter messageRouter;

    @GetMapping(produces = "text/plain;charset=utf-8")
    public String authGet(@PathVariable String appid,
                          @RequestParam(name = "signature", required = false) String signature,
                          @RequestParam(name = "timestamp", required = false) String timestamp,
                          @RequestParam(name = "nonce", required = false) String nonce,
                          @RequestParam(name = "echostr", required = false) String echostr) {

        this.logger.info("\n接收到来自微信服务器的认证消息：[{}, {}, {}, {}]", signature,
                timestamp, nonce, echostr);
        if (StringUtils.isAnyBlank(signature, timestamp, nonce, echostr)) {
            throw new IllegalArgumentException("请求参数非法，请核实!");
        }

        if (wechatService == null) {
            throw new IllegalArgumentException(String.format("未找到对应appid=[%d]的配置，请核实！", appid));
        }

        if (wechatService.checkSignature(timestamp, nonce, signature)) {
            return echostr;
        }

        return "非法请求";
    }

    @PostMapping(produces = "application/xml")
    public String post(@PathVariable String appid,
                       @RequestBody String requestBody,
                       @RequestParam("signature") String signature,
                       @RequestParam("timestamp") String timestamp,
                       @RequestParam("nonce") String nonce,
                       @RequestParam("openid") String openid,
                       @RequestParam(name = "encrypt_type", required = false) String encType,
                       @RequestParam(name = "msg_signature", required = false) String msgSignature) {
        this.logger.info("\n接收微信请求：[openid=[{}], [signature=[{}], encType=[{}], msgSignature=[{}],"
                        + " timestamp=[{}], nonce=[{}], requestBody=[\n{}\n] ",
                openid, signature, encType, msgSignature, timestamp, nonce, requestBody);

        if (!wechatService.checkSignature(timestamp, nonce, signature)) {
            throw new IllegalArgumentException("非法请求，可能属于伪造的请求！");
        }

        // 明文传输的消息
        WxMpXmlMessage inMessage = WxMpXmlMessage.fromXml(requestBody);
        WxMpXmlOutMessage outMessage = messageRouter.route(inMessage);
        if (outMessage == null) {
            return "123";
        }
        return outMessage.toXml();
    }

}
